Oil-burning locomotive-furnace.



G. M. BEAN. OIL BURMNG LOCOMOTIVE FURNACE. APPucAxoN man AuG.3.19x4.

34A vn Patented May 4, 1915.

UNITED smrns rafrnnfr onnion.

GUY M. BEAN, OF LOS ANGELES, CALIFGRNIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN ARCH COMPANY, OF NEV YORK, N. Y., A CORPORATION OF DELAWARE.

OIL-BURNING LOCGMOTIVE-FURNACE.

Application filed August 3, 1914.

To all wlw/n. it 'may concern.

Bc it known that l, GUY M. BEAN. a Citizen of the United States, and a resident ot Los Angeles. county Los Angeles, and State of (.alitornia, have invented certain new and useful improvements in Oil-Burning LocomotiveFurnaces, of which the `followingr is a specification.

My invention relates to locomotives and oil burning apparatus therefor and the 0bject ot' my invention is to increase the elliciencyv and the reliability of such apparatus.

ln the ordinary arrangement and construction of the oil burning' apparatus ot locomotives, the oil burner proper is supplied with steam from a remote part ot' the boiler through a pipe or pipes wholly or in part ex posed to the weather and the quality ot vthe steam emerging from the nozzle ot the burner constantly varies with the conditions encountered. Variation from this cause is accentuated by the varying quality ot the steam furnished by the boiler at different times. Oil which is atomized by a jet ot dry steam burns readily in thc firebox of a. locomotive, whereas the presence of any con-- siderable proportion oi" tree moisture. as in relatively cool wet steam. markedly di,- niinishes the efficiency of the burning jet ,from the burner. v

The specific object of ,my invention is to overcome the variation in etlicienoy here indicated and to make the operation of oil burners sure and reliable under all conditions. To this end I superheat t-lie steam on its way to the burner and in the immediate roximity thereof. as by means of a` superiieating element. situated in the fireboX and in close connection with the burner thereof".

illy invention Will be more readily under stood by reference to the accompanying drawings 'lmminfel a part of this specification, illustratingy the invention in preferred formfand in which Figure. 1 is a Yvertical longitudinal see tion of the lower part of the rear end of a locomotive boiler and its irebox; Fig. 2 is a partial sectional view on the line 2*? ot Fing l; and Fig. 3 is an enlarged longitudr nal and vertical section taken .trom Fig. l disclosing: the burner proper and the super heating arrangement.

The drawings disclose a typical locomotive Firebox 'A and its oil burning bottom or Specification of Letters Patent.

y pan.

Patented May 4, 1915.

Seriftl No. 854,735.

pan B. As is usual the dropped portion B1 55 of the pan is shorter than the irebox to leave space for the burner and its piping.

The space between the end of the dropped portion B1 and the flue sheet A1 of the fireboX is closed by a substantially horizontal floor or shelf B2. The dropped portion of the pan contains the main entrance and burner opening B3. Auxiliary )air inlets B1 are sometimes used in the side walls of the As shown. the pan and its marginal shelf portions are lined or {loored with refractory bricks C. On the shelf portion B2 l provide two layers of bricks, C1 being the lower layer and C2 the upper layer, for a purpose about to be described. D is the oil burner proper supported in the openingr B3.

E is a valved oil supply pipe connected with said burner proper D.

F is a valved pipe which leads from the dome (not shown) of the boiler` to supply steam to the lmrner D. ln practico, the valves c and ,f of the pipes E and F are pret-` erably arranged for control from the cab of the locomotive. the showingr of said valves e and ,t herein beiner diagrammatic.

F is the steam connection ot' the burner l). There are two steam courses between the pipe F and connection F1. (ne of these Courses includes a superheater and the other constitlltcs an emergency 'oy-pass. The superheater proper is preferably 'a coil or sez-ics of U-bcnds G. embedded in the refractory brick flooring;r or lining of the irebox bottom or 'pan B. The most stable part of 90 the lining' is that upon the Snell: B, and tl'ierefore select this part to contain the supcrlieating coil (l. and for conv 'nienee in embedding; the soil. maire this portion of the lining in two layers before mentioned. #i5 Ordinarily. to bett-er contain the coil G., l forni one or both layers with groove or recess C3, in which the coil is fully ineased and protected from direct Contact with the flame in the tirebo. A pipe G2. containingv a shut-ofi? valve G3, connects the steam vpipe F with the end G* of the superheeting coil (l. nd the pipe G5. containing a shut-off valve (le. connects the end GT et' the superheating coil G with the steam connection F1 of the burner D. The bypass, before mentioned. comprises a pipe F2 containingr a shut-off valve F8 and joining the steam pipe F with the Steam connection F1 of Vthe burner D, Steam, of quantity which varies as before mentioned, is supplied from the boiler through the pipe F. During the non mel action of the apparatus the valves If in the steam pipe F and c in the oil pipe E are regulnbly open; and the valves G3 and G in the superheater connections are also Opern whereas the by-pass valve F3 is closed. Steam, therefore, flows freely from the pipe F and passes through the superhefiting coil or element G on the shelf in the tirebox to the burner D. The flame, which is ignited and burns from the burner B, normally keeps the iireboX A at a high temperature and the refractory lining` C (including C, C2) is therefore normally hot. It follows that although the steam entering the superhenting coil may be very Wet and contain considerable free moisture, it will be superheeted in passing through the coil, and will therefore emerge from the burner D and take on its burden of oil in a, state best adapted to the atomization of the latter and combustion in the fireboX. In event of :i breek or leak in the superheating coil, the valves G3 and G are closed, and the valve F3 is opened to temporarily supply steam to i the burner, through the direct emergency course or by-pess F2.

As various modifications of my invention will readily suggest themselves to one skilled in the zirt, I do not limit my invention to the structure herein shown, except as stated in the appended claims.

Having thus described my invention, I claim :is new and desire to secure by Letters Patent: l

l. A locomotive iboiler and its iirebox, in combination with n' pan which closes the boit-om of the Firebox, and haring e. substantinll horizontal shelf portion, seid pan and sheii ling floored with refractory materiel,

1i ner beneath seid shell' und positioned ect :i stream of oil and steam into said pan, an oil supply pipe connected with il burner, and a superheating coil embedded in the refractory material on said shelf and having its ends connected with the belier and burner respectively, for the pur.- pf' described.

A locomotive boiler and its irebox, in combination with a pan which closes the bottom of the firebox end having it substantiniy horizontal shelf portion, ce rrying,r two layers ot' refractory bricks, a. burner beneath said she-lf and positioned to project a stream of oil and steam into said pan, an oil supply pipe connected with said burner, and a superheeting coil positioned between said layers of bricks ^and having its ends connected with the boiler and burner respectively, for the purposes described.

In testimony whereof, I have hereunto set my hand this 31st dey of March, 1914-, in the presence of two subscribing witnesses.

GUY M. BEAN.

Witnesses KATHERINE E. TITUS, PAUL WEEKS. 

